Pawatana C, Boonyakamjana P, Kajorncheeppankarm S. Development of Simple Low Cost Filter and the Determination of Its Optimal Condition in Reducing Iron Oxide of Under Ground Water. Eng Appl Sci Res [internet]. 2013 Apr. 19 [cited 2026 Jan. 8];24(2):21-6. available from: https://ph01.tci-thaijo.org/index.php/easr/article/view/6853